"Yoyoはどのような性格タイプですか？ Yoyoは、INTP in MBTI、1w9 - so/sx - 729 in Enneagram、RLUEI in Big 5、SEI in socionics のパーソナリティタイプです。"
He is One's brother. Appears to be a dark blue male stickman whose weapon is a yoyo that can make explosions.
